Coke removal drilling rig



p 4, 1956 c. E. MANNING COKE REMOVAL DRILLING RIG Filed Aug. 16. 1952 V/4J i R 5. 4% a; L

United States Patent COKE REMOVAL DRILLINGRIG f Clyde E. Manning,Covingtou, Ky., assignor to The Standard Oil Company, Cleveland, Ohio, acorporation of Ohio Application August 16, 1952, Serial No. 304,820 4Claims. (Cl. 15--104.07)

In operations on hydrocarbon material, such as in the cracking ofpetroleum, there is an accumulation of caked coke in chambers or drumsin which the high temperature soaking operation occurs. Originally inthe use of such apparatus, after cooling down, the bottom plate wasremoved and workmen had to progressively cut out the coke, entering frombelow. such hand operation, it has been proposed to project a mechanicalloosener up into the coke mass, the loose-uer being projected by ahydraulic ram. Such arrangement required a ram cylinder and plungerwhich in many cases would be of such a length as to be prohibitive. Inthe present invention, while the advantages of a ram drive are had, thearrangement is such that a relatively short piston rod suflices, and theequipment has wide versatility. Other objects and advantages will appearfrom the following description.

To the accomplishment of the foregoing and related ends, said inventionthen comprises the features hereinafter fully described and particularlypointed out in the claims, the following description and the annexeddrawing setting forth in detail certain illustrative embodiments of theinvention, these being indicative, however, of but a few of the variousways in which the principle of the invention may be employed.

In said annexed drawing:

Fig. l is a side elevational view of apparatus embodying the invention,and

Fig. 2 is a similar view of a modification.

In general, the apparatus involves a chamber or drum in which heated oilis subjected to action involving cracking of hydrocarbons and whichresults in a deposit of coke, and spaced below is a hydraulic cylinder,ordinarily positioned below the floor level, and the piston rod ismovable toward the chamber, and interposable at the upper end of the rodsections of extension may carry the coke-loosening tool, while in orderto permit insertion and removal of such extension sections, a support isin position to hold up the coke loosening tool and attached sectionswhile another section is being placed.

As seen by reference to Fig. l, the coke accumulating chamber or drum Cis positioned over a ram cylinder 2 which is below the floor level, andthe piston rod 3 thence may travel up and down toward the chamber C toproject the coke-loosening tool 4. Insertable sections 5, of variouslengths in accordance with particular requirements, are interposablebetween the upper end 6 of the ram and the lower end of thecoke-loosening means and sections holding it. Laterally at the bottom ofthe chamber C a bracket 8 at one side provides a means for mounting alever S pivotally at 9. One end of this lever is bifurcated or forked asat 10, to position under a holding flange 7 for this purpose on thelowest section which holds the coke-loosening means, and the other end11 is manipulatable to swing the forked end into and out of position toengage under the flanged end 7 of the coke-loosening tool section. Asconsiderable energy is required for the lever, fluid-pressure means isprovided,

In later substitution of and this is in the form of an air hoist 12, ofconventional type, having a take-up pulley 13 and cable 13' connectingthrough floor pulleys 15 to the lever end 11. The air hoist is carriedby a trolley 14 which is movable on a the end of the excursion permittedby the piston rod length ,is reached, the lever S is swung with itsbifurcated ,end 1!) under the flange 7 of the loosening tool, and onremoving the connecting bolts between the ,fianged lower end of theloosening tool and the adjacent end of the piston rod, the piston rodmay be lowered and an insert extension section 5 be interposed, whilethe coke loosening toolis held up byengagement of the fork 10 underflange 7; the air hoist 12 having been actuated to draw and hold thelever end to carry the loosening tool. weight. Where the connectionbetween the piston rod and adjacent sections, instead of by a flangedpoint, is by a breech lock type arrangement of lugs on the flanges and abolt preventing accidental opening, the disconnecting of a joint and theconnecting up of another section is carried out similarly. The cable canthen be payed out and the lever swung manually by the operator out ofposition, whereupon the coke-loosening tool can be forced further upinto the coke.

Where space requirements make it advisable, as shown in Fig. 2, thelever S mounted as in Fig. 1, may have its fluid-pressure operatingmeans in the form of a cylinder 12' pivoted at its upper end to asuitable support 20, and having its piston rod 14 pivoted at its lowerend 21 to the lever end 11. In this, the lever S may be positioned tosupport the coke-loosening tool, as shown in full line in Fig. 2, andthe lever may be tilted out of engaging position, as shown in dottedlines. The operation of placing extension sections for the hydraulic ramplunger is the same as described foregoing.

Other modes of applying the principle of the invention may be employed,change being made as regards the details described, provided thefeatures stated in any of the following claims, or the equivalent ofsuch, be employed.

I therefore particularly point out and distinctly claim as my invention:

1. In combination with a coke-accumulating chamber having afluid-pressure ram spaced therebelow, cokeloosening means adapted to bedriven by said ram up into the chamber, and extension sectionsinterposable between said ram and said coke-loosening means forinterconnecting the same; a bracket at the bottom of thecokeaccumulating chamber at one side thereof, lateral projectionscarried by said coke-loosening means and said extension sections, alever pivoted to said bracket for swinging movement in a vertical planeincluding the common axis of said coke-loosening means and extensionsections so as to engage therewith, said lever having a bifurcated endto swing in to support the coke-loosening means by engagement with suchlateral projection thereof or with a lateral projection of a previouslyinserted section, fluid-pressure operating means for the lever, and acable connecting said fluid-pressure means and the lever.

2. In combination with a coke-accumulating chamber having afluid-pressure ram spaced therebelow, cokeloosening means adapted to bedriven by said ram up into the chamber, and extension sectionsinterposable between said ram and said coke-loosening means forinterconnecting the same; a bracket at the bottom of the loweredposition, the

coke-accumulating chamber at one side thereof, lateral projectionscarried by said coke-loosening means and said extension sections, alever pivoted to said bracket for swinging movement in a vertical planeincluding the loosening means adapted to be driven by said ram up intothe chamber, and extension sections interposable between said ram andsaid coke-1oosening means for interconnecting the same; a bracket at thebottom of the coke-accumulating chamber at one side thereof, a supportpivoted to said bracket for swinging movement about a substantiallyhorizontal axis and into and out of the path of said sections, suchpivotal support carrying means operative to engage and independentlysupport the cokeloosening means, thereby to permit insertion of such anextension section, and fluid-operated means for holding said support.

4. In combination with a coke-accumulating chamber having afluid-pressure ram spaced therebelow, cokeloosening means adapted to bedriven by said ram up into the chamber, and extension sectionsinterposable between said ram and said coke-loosening means forinterconnecting the same; a bracket at the bottom of thecoke-accumulating chamber at one side thereof. a support pivoted to saidbracket for swinging movement about a substantially horizontal axis andinto and out of the path of said sections, such pivotal support carryingmeans operative to engage and independently support the coke-looseningmeans, thereby to permit insertion of such an extension section, andmeans for moving said support transversely to and axialwise with respectto said sections.

References Cited in the file of this patent UNITED STATES PATENTS

3. IN COMBINATION WITH A COKE-ACCUMULATING CHAMBER HAVING AFLUID-PRESSURRE RAM SPACED THEREBELOW, COKELOOSENING MEANS ADAPTED TO BEDRIVEN BY SAID RAM UP INTO THE CHAMBER, AND EXTENSION SECTIONSINTERPOSABLE BETWEEN SAID RAM AND SAID COKE-LOOSENING MEANS FORINTERCONNECTING THE SAME; A BRACKET AT THE BOTTOM OF THECOKE-ACCUMULATING CHAMBER AT ONE SIDE THEREOF, A SUPPORT PIVOTED TO SAIDBRACKET FOR SWINGING MOVEMENT ABOUT A SUBSTANTIALLY HORIZONTAL AXIS ANDINTO AND OUT OF THE PATH OF SAID SECTIONS, SUCH PIVOTAL SUPPORT CARRYINGMEANS OPERATIVE TO ENGAGE AND INDEPENDENTLY SUPPORT THE COKELOOSENINGMEANS, THEREBY TO PERMIT INSERTION OF SUCH AN EXTENSION SECTION, ANDFLUID-OPERATED MEANS FOR HOLDING SAID SUPPORT.